3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = array('person f','person c','person g','person a','person d','person e'); $last = array('person a','person c','person g'); usort($data,function($a,$b) use($last){ return in_array($a,$last) <=> in_array($b,$last) //sort if in $last ?: $a <=> $b; //sort alphabetically }); var_export($data);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 0 => 'person d', 1 => 'person e', 2 => 'person f', 3 => 'person a', 4 => 'person c', 5 => 'person g', )

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93.9 ms | 1256 KiB | 4 Q